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Customer Ratings & Reviews

Your price for this item is $149.99

Customer reviews

Rating 4.8 out of 5 stars with 1786 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.7 out of 5 stars

  • Quality

    Rating 4.8 out of 5 stars

  • Ease of Use

    Rating 4.8 out of 5 stars

Pros mentioned filter

Cons mentioned filter

96%would recommend to a friend

Customers are saying

Customers frequently mention the RMx Series RM850x's excellent performance and quiet operation as major strengths. Its fully modular design and ease of installation are also frequently praised, simplifying cable management and the overall building process. While some users noted its larger size, the positive feedback overwhelmingly focuses on its reliability and value. The power supply is considered a great option for its price point.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 88 Showing 1,741-1,760 of 1,786 reviews
  • Pros mentioned:
    Ease of use, Modular

    Rated 5 out of 5 stars

    Title

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Modular. Easy to install. My old 750 died after ~5 years of use. Upgraded because why not.

    I would recommend this to a friend
  • Rated 1 out of 5 stars

    DoA

    |
    |
    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Cost me $100 to have this installed only to find out it was defective.

    No, I would not recommend this to a friend
    • Brand response from Corsair
      Posted .

      Hi,

      Sorry to hear about your experience. Considering this PSU carries a 10-year warranty, we'd appreciate the opportunity to get this resolved - please reach out directly to our Support Escalation team at SES@corsair.com with a screenshot of this review and our team will assist you ASAP.

      -Albert CorsairGaming

  • Pros mentioned:
    Noise level

    Rated 5 out of 5 stars

    Quiet wonderful PSU

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I bought this PSU to replace an older louder unit. This PSU is extremely quiet and providing power as its supposed to. One excellent feature is that this has a large fan at the base of the unit for the form factor, generally they don't come this big unless you pay a premium.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Review on Product

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The product works 100% as shown and it was very easy to install. One complaint I have is that when I went to pick up the item at the location, the customer support wasn’t very as “welcoming” as I would imagined.

    I would recommend this to a friend
  • Pros mentioned:
    Modular, Power supply

    Rated 5 out of 5 stars

    Top Quality PSU

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Powerful and quiet, I enjoy the fully modular aspect

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Would buy for a build again !

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very good power supply for gaming PC/Everyday use, this was my first time building but I'm very glad I bought this. Also was shipped very quickly and with care! :D

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Only buy if you like strong PSUs w/ great cabling

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I needed a reliable power supply at a reasonable price that could power all of my present devices while also allowing for future upgrades. Because of the modular arrangement, I was able to eliminate unnecessary wire clutter, making my installation considerably more tidy. It includes more than enough wires to complete even the most complex full ATX configurations. Individual cable runs are wrapped in a nylon shroud to keep them from tangling. When the system is stressed, the power delivery is clean and steady, and it runs relatively cool. There is, in my opinion, no better power supply in this price or (dare I say) power range.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Works good, no complaints

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Worked immediately, have had no issues. installation had no trouble. have only used it for around a month.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Excellent

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Excellent Highly recommended very good performance

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Awesome Product

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This product has been reliable, good packaging. High Hopes it lasts.

    I would recommend this to a friend
  • Pros mentioned:
    Power supply

    Rated 5 out of 5 stars

    It works.

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Came exactly as advertised, powers my computer properly.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    My Honest Reaction

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I was using this when all of the sudden "BOOM" the psu had blown up right before my very eyes. I went to the mirror and looked at myself, charred and crusty from the explosion. I have to get a new home now because after the explosion there was an unknown fire and it managed to reach the gas lines of my house. Many tears were shed after this incident. Overall though a pretty good PSU. And its gold rated which is nice too!

    I would recommend this to a friend
  • Pros mentioned:
    Power supply

    Rated 5 out of 5 stars

    Works great!

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Needed a replacement of one I got from Newegg…Best Buy coming in clutch!

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Good product

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works great, no problems with installation just wish some of the cords were a tad longer

    No, I would not recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Power Supply Crosair

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Reliable so far. Easy to install. As expected. Will buy again.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Rated 5 out of 5 stars

    Just what I needed

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The unit was easy to install and is working well. I expect this PSU will serve me through several upgrades to my system.

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Good power supply, lacking some bells and whistles

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Worked fine, easy to install. It only had two 8-pin (6+2) gpu power cables each with an additional pigtail, which was fine but for the price and the direction that graphics cards are moving, I would have expected it to come with three. The cables themselves were fine my previous Thermaltake power supply had braided sleeves which I liked better. For a fully modular power supply I was expecting a nice pouch to hold all the extra cables (which I've had with power supplies in the past) but this simply came with the cheap plastic packaging. Overall I felt like I got a good/average product at an above average price.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    GREAT updated product

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Huge fan of Corsair! This product update is great and I am happy I went with the newer version...I know Corsair will stand by their product if I have any issues. They have a 10 year warranty and the one time I had an issue with a product their customer service team was quick to resolve the problem.

    I would recommend this to a friend
  • Pros mentioned:
    Noise level

    Rated 5 out of 5 stars

    That's Pretty good

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Currently using it and have had 0 issues. Quiet as a mouse.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Great Product

    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I bought this power supply because my old one was running way too hot. This one has been getting the job done and not getting hot like my old one was. It's also nice that it has the module cords, so cord management in the tower is much easier since I'm only using the cords I need rather than having many leftover.

    I would recommend this to a friend